Figure 4
The image consists of two parts. On the left, there are two rectangular sections depicting different infill pattern geometries used in 3D printing. The top section illustrates a 'Parallel Infill Pattern Geometry' with closely spaced, parallel lines, while the middle section shows a 'Cross Infill Pattern Geometry' filled with diagonally crossed lines. There are no blank spaces between these sections. On the right, two 3D printed specimens are shown, characterized by a narrow middle and wider ends. A scale bar of ten millimetres is displayed at the bottom right corner. The printed samples exhibit a textured surface indicative of the used infill patterns.(a) Infill pattern; (b) tensile test specimens
Source: Author’s own work